An approximate analysis of medium frequency parallel converter used in power supply controlled by microcomputer is presented in this work . the proposed approach may be applied to converters whose industrial applications are induction heating and metal melting installations . it is shown that closed loop circuit feedback control and opened loop circuit control are separated during the zero - power start - up process 通过阅读资料和文献，在对中频感应加热及其相关技术的发展、现状和趋势作了一个比较全面而深刻的研究基础上，论文分析了并联感应加热电源闭环控制的控制策略，并采用闭环开环分离的方法，解决了零电压启动问题；设计了中频感应加热电源的微机控制系统。
